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Publication numberUS4445245 A
Publication typeGrant
Application numberUS 06/410,530
Publication dateMay 1, 1984
Filing dateAug 23, 1982
Priority dateAug 23, 1982
Fee statusLapsed
Publication number06410530, 410530, US 4445245 A, US 4445245A, US-A-4445245, US4445245 A, US4445245A
InventorsNing K. Lu
Original AssigneeLu Ning K
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Surface sweeper
US 4445245 A
Abstract
A miniature electrically powered surface sweeper having a rotary brush element which is adapted to come in direct contact with a surface to be cleaned. The brush element is disposed within a housing having a curved inner wall surface which contacts the bristles as the same move inwardly within the housing to prevent loss of dust particles. A receptacle element is provided with a movable trap opened by the moving of an electrical switch to closed position to power the brush element, and closed when the switch is opened to discontinue operation of the brush element. The brush element includes bristles which are formed of cutting a planar sheet of synthetic resinous material to form flat bristles attached to a base, the base being in turn attached to an outer surface of a rotating drum member to permit convenient replacement.
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Claims(2)
I claim:
1. A miniature surface sweeper comprising: a housing element having a wall defining a curvilinear inner surface; a dust receptacle disposed at a part of said housing element opposite said wall, said receptacle being removable for emptying; a rotary brush element including a cylindrical surface disposed between said wall and said dust receptacle, and having flexible bristles thereon in the form of a comblike member, the base of which is secured to said cyclindrical surface, said housing element having an intake opening through which the tips of bristles may project to directly engage collected particles; and means for driving said brush element to rotate the same in the direction delivering collected particles along said curvilinear surface to said dust receptacle; said driving means including an electric motor and a power source therefor; said dust receptacle having a closable trap, said power source including a manually movable electric switch coupled to said trap for simultaneous movement, wherein moving said switch to closed position serves to open said trap.
2. A sweeper in accordance with claim 1, further characterized in a provision of bristle elements which are cut to flat comb-like configuration, wherein the bristles thereof are in staggered relation, and in which the base thereof is secured to said cylinder in a spiral fashion.
Description
BACKGROUND OF THE INVENTION

This invention relates generally to the field of miniaturized surface sweepers having a powered rotary drum element, and more particularly to an improved form thereof particularly suited for claning drafting tables and drawings disposed thereon, worktables, dining table surfaces and the like. Devices of this general type are well known in the art, and the invention lies in specific constructional details which permit improved operation, convenience in use, and lowered cost of manufacture.

At the present state of the art, draftsmen and artists normally clean the surface of their tables and their work using a drafting or dust brush to sweep dust away. The use of such a brush does not collect dust but serves only to scatter the same away from the work area, so that ultimately a separate cleaning operation is required. It is known in the art to provide relatively small sized cleaners which are battery powered and handheld during operation. Such cleaners have suffered from a variety of disadvantages, including relatively low efficiency, high current consumption, excessive bulk and complicated construction.

SUMMARY OF THE INVENTION

Briefly stated, the invention contemplates the provision of an improved miniature surface sweeper which is effective and convenient for a plethora of cleaning operations that are too small to warrant use of a full size vacuum cleaner, and too messy to be cleaned by hand. The sweeper comprises a housing, one side wall of which has a curved inner surface which cooperates with a revolving brush element to guide the dust into a receptacle. The receptacle is provided with a closable trap which is opened when a power switch is moved to a position making the brush element operative, the trap closing when current is disconnected to the bush element driving means. The dust receptacle is in the form of a removable drawer which may be pulled from the housing to be emptied and subsequently replaced. The brush element includes a rotating cylinder, the outer surface of which is provided with bristles formed by cutting a sheet of synthetic resinous material to comb-like configuration, and adhering the base in spiral fashion to the outer surface of the cylinder. The ends of the "bristles" are allowed to contact the curved wall surface to prevent loss of dust particles, and with wear the comb-like members can be conveniently replaced with only minimal disassembly of the device.

BRIEF DESCRIPTION OF THE DRAWING

In the drawing, to which reference will be made in the specification, similar reference characters have been employed to designate corresponding parts throughout the several views.

FIG. 1 is a cross sectional view of an embodiment of the invention as seen from the plane 1--1 in FIG. 2.

FIG. 2 is a cross sectional view thereof, as seen from the plane 2--2 in FIG. 1.

FIG. 3 is a perspective view thereof.

FIG. 4 is a perspective view showing the coupling of a power switch with a dust trap member for simultaneous movement.

FIG. 5 is a view in elevation of a bristle element forming a part of the embodiment.

DETAILED DESCRIPTION OF THE DISCLOSED EMBODIMENT

In accordance with the invention, the device, generally indicated by reference character 10, comprises broadly: a housing element 11, a brush element 12, and a self-contained power source 13.

The housing element 11 includes first and second side walls 20 and 21, respectively, an upper wall 22, a forward wall 23, and a rear wall 24. A horiztonal septum 25 extends between the side walls, and forms a compartment for the power source 13. A removable box-like dust receptacle 26 is slidably associated with the remaining parts of the housing element. It includes an outer wall 27, a pair of side walls, one of which is indicated by reference character 28, and provides an upper opening 29 for the reception of dust and particulate matter. The outer ends 30 of the outer wall 27 are engageable within corresponding notches 31 in the side walls 20-21 to provide a convenient means for removal. A lower wall 32 is disposed above an intake opening 33 adjacent the brush element. A pivotally mounted trap 34 is suspended from the septum 25 and includes linkage means 35 (see FIG. 4) to enable the same to cooperate with movement of a sliding member 36 of a manually operated power switch.

The brush element 12 includes a hollow cylinder 40, an outer surface 41 of which supports synthetic resinous flat bristles 42 (see FIG. 5). A central septum 43 mounts a laterally extending bushing 44 which engages the shaft 45 of a small electric motor 46 suitable for operation in the three to six volt range. The motor is carried by a circular extension 47 on the inner surface 48 of the side wall 20, and is interconnected by conductors (not shown) with the power source 13.

The power source 13 is disposed within a recess 50 in the housing element 11, and is adapted to accommodate between two and four small dry cells 51 which are held in position by vertical septums 52. A sliding switch 53 includes the extension 36 which projects outwardly of the housing element in a slot 49 for movement between on an off positions, this movement serving to also open and close the trap 34 to prevent loss of collected material.

As contrasted with many prior art sweepers, it is contemplated that the tips of the individual bristles contact the curvilinear interior surface of the housing element, both for the purpose of preventing loss of dust particles, and for imparting a static charge to the bristles which will assist in the sweeping action. As the bristles are of relatively lightweight material, the frictional resistance involved is slight, and as wear shortens the effective length of the brisltes, they may be conveniently replaced by removing the cylinder 40, and peeling off the comb-like members to be replaced by similar new members, using a pressure sensitive adhesive (not shown) or the like.

It may thus be seen that I have invented a novel and highly useful miniature surface sweeper which possesses many advantages not known in the prior art. By the use of comb-like bristles made from thin synthetic resinous material, high flexibility of the bristles is obtained permitting actual contact with a corresponding curvilinear wall to enhance suction, and permit the ends of the bristles to project outwardly from the intake opening to positively engage particles being collected, rather than relying on suction alone. Because of the cube-like configuration, the item is easily grasped and moved over the surfaces to be cleaned, and no external handle is necessary. The presence of a manually openable trap leading to a dust receptacle, which is controlled by movement of the power switch prevents accidental loss of any collected particles, should the device be accidentally overturned when not in use.

I wish it to be understood that I do not consider the invention limited to the precise details of structure shown and set forth in this specification, for obvious modifications will occur to those skilled in the art to which the invention pertains.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2476537 *Dec 17, 1943Jul 19, 1949Erickson Carl ESuction cleaner and rotary agitator therefor
US2537523 *Apr 9, 1948Jan 9, 1951Frost Clements APortable vacuum cleaner
US2578549 *Jul 26, 1948Dec 11, 1951Hooban Robert OPower-driven clothes-cleaning brush
US2994098 *Jan 23, 1957Aug 1, 1961Hiroshi FukubaVacuum cleaner with flexible rotary-pistons
US3308498 *Mar 1, 1965Mar 14, 1967Gen ElectricBattery-powered clothes brush
US3872539 *Feb 12, 1973Mar 25, 1975Doyel John SHand-held cleaning device utilizing air flow and broom action
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4901394 *Apr 17, 1989Feb 20, 1990Matsushita Electric Industrial Co., Ltd.Floor nozzle for electric cleaner
US5020186 *Jan 24, 1990Jun 4, 1991Black & Decker Inc.Vacuum cleaners
US5084934 *Apr 29, 1991Feb 4, 1992Black & Decker Inc.Vacuum cleaners
US5115538 *Apr 29, 1991May 26, 1992Black & Decker Inc.Vacuum cleaners
US5611109 *Feb 20, 1996Mar 18, 1997Firma FedagCleaning roller for the suction head of a vacuum cleaning device
US5732434 *Nov 14, 1996Mar 31, 1998Mccarty; Mary K.Container side-wall scraper
US6532619Jun 12, 2001Mar 18, 2003Bissell Homecare, Inc.Extraction cleaner and agitator therefor
US7251857 *Dec 10, 2003Aug 7, 2007Steven Jerome CarusoVersatile tools
US7636982 *Dec 29, 2009Irobot CorporationAutonomous floor cleaning robot
US7784139Feb 4, 2005Aug 31, 2010S.C. Johnson & Son, Inc.Surface treating device with cartridge-based cleaning system
US8230540Apr 23, 2008Jul 31, 2012Nelson Marc OCordless sweeper
US8239992May 9, 2008Aug 14, 2012Irobot CorporationCompact autonomous coverage robot
US8253368Jan 14, 2010Aug 28, 2012Irobot CorporationDebris sensor for cleaning apparatus
US8368339Aug 13, 2009Feb 5, 2013Irobot CorporationRobot confinement
US8374721Dec 4, 2006Feb 12, 2013Irobot CorporationRobot system
US8378613Oct 21, 2008Feb 19, 2013Irobot CorporationDebris sensor for cleaning apparatus
US8380350Dec 23, 2008Feb 19, 2013Irobot CorporationAutonomous coverage robot navigation system
US8382906Aug 7, 2007Feb 26, 2013Irobot CorporationAutonomous surface cleaning robot for wet cleaning
US8386081Jul 30, 2009Feb 26, 2013Irobot CorporationNavigational control system for a robotic device
US8387193Aug 7, 2007Mar 5, 2013Irobot CorporationAutonomous surface cleaning robot for wet and dry cleaning
US8390251Aug 6, 2007Mar 5, 2013Irobot CorporationAutonomous robot auto-docking and energy management systems and methods
US8392021Aug 19, 2005Mar 5, 2013Irobot CorporationAutonomous surface cleaning robot for wet cleaning
US8396592Feb 5, 2007Mar 12, 2013Irobot CorporationMethod and system for multi-mode coverage for an autonomous robot
US8412377Jun 24, 2005Apr 2, 2013Irobot CorporationObstacle following sensor scheme for a mobile robot
US8417383May 31, 2007Apr 9, 2013Irobot CorporationDetecting robot stasis
US8418303Nov 30, 2011Apr 16, 2013Irobot CorporationCleaning robot roller processing
US8428778Nov 2, 2009Apr 23, 2013Irobot CorporationNavigational control system for a robotic device
US8438695Dec 8, 2011May 14, 2013Irobot CorporationAutonomous coverage robot sensing
US8456125Dec 15, 2011Jun 4, 2013Irobot CorporationDebris sensor for cleaning apparatus
US8461803Dec 29, 2006Jun 11, 2013Irobot CorporationAutonomous robot auto-docking and energy management systems and methods
US8463438Oct 30, 2009Jun 11, 2013Irobot CorporationMethod and system for multi-mode coverage for an autonomous robot
US8474090Aug 29, 2008Jul 2, 2013Irobot CorporationAutonomous floor-cleaning robot
US8478442May 23, 2008Jul 2, 2013Irobot CorporationObstacle following sensor scheme for a mobile robot
US8515578Dec 13, 2010Aug 20, 2013Irobot CorporationNavigational control system for a robotic device
US8516651Dec 17, 2010Aug 27, 2013Irobot CorporationAutonomous floor-cleaning robot
US8528157May 21, 2007Sep 10, 2013Irobot CorporationCoverage robots and associated cleaning bins
US8565920Jun 18, 2009Oct 22, 2013Irobot CorporationObstacle following sensor scheme for a mobile robot
US8572799May 21, 2007Nov 5, 2013Irobot CorporationRemoving debris from cleaning robots
US8584305Dec 4, 2006Nov 19, 2013Irobot CorporationModular robot
US8594840Mar 31, 2009Nov 26, 2013Irobot CorporationCelestial navigation system for an autonomous robot
US8598829Jun 14, 2012Dec 3, 2013Irobot CorporationDebris sensor for cleaning apparatus
US8600553Jun 5, 2007Dec 3, 2013Irobot CorporationCoverage robot mobility
US8634956Mar 31, 2009Jan 21, 2014Irobot CorporationCelestial navigation system for an autonomous robot
US8656544 *Jul 13, 2011Feb 25, 2014Kenneth AndersonSweeper with sweeping elements
US8656550Jun 28, 2010Feb 25, 2014Irobot CorporationAutonomous floor-cleaning robot
US8661605Sep 17, 2008Mar 4, 2014Irobot CorporationCoverage robot mobility
US8670866Feb 21, 2006Mar 11, 2014Irobot CorporationAutonomous surface cleaning robot for wet and dry cleaning
US8671507Jun 28, 2010Mar 18, 2014Irobot CorporationAutonomous floor-cleaning robot
US8686679Dec 14, 2012Apr 1, 2014Irobot CorporationRobot confinement
US8726454May 9, 2008May 20, 2014Irobot CorporationAutonomous coverage robot
US8739355Aug 7, 2007Jun 3, 2014Irobot CorporationAutonomous surface cleaning robot for dry cleaning
US8749196Dec 29, 2006Jun 10, 2014Irobot CorporationAutonomous robot auto-docking and energy management systems and methods
US8761931May 14, 2013Jun 24, 2014Irobot CorporationRobot system
US8761935Jun 24, 2008Jun 24, 2014Irobot CorporationObstacle following sensor scheme for a mobile robot
US8763199Jun 28, 2010Jul 1, 2014Irobot CorporationAutonomous floor-cleaning robot
US8774966Feb 8, 2011Jul 8, 2014Irobot CorporationAutonomous surface cleaning robot for wet and dry cleaning
US8780342Oct 12, 2012Jul 15, 2014Irobot CorporationMethods and apparatus for position estimation using reflected light sources
US8781626Feb 28, 2013Jul 15, 2014Irobot CorporationNavigational control system for a robotic device
US8782848Mar 26, 2012Jul 22, 2014Irobot CorporationAutonomous surface cleaning robot for dry cleaning
US8788092Aug 6, 2007Jul 22, 2014Irobot CorporationObstacle following sensor scheme for a mobile robot
US8793020Sep 13, 2012Jul 29, 2014Irobot CorporationNavigational control system for a robotic device
US8800107Feb 16, 2011Aug 12, 2014Irobot CorporationVacuum brush
US8839477Dec 19, 2012Sep 23, 2014Irobot CorporationCompact autonomous coverage robot
US8854001Nov 8, 2011Oct 7, 2014Irobot CorporationAutonomous robot auto-docking and energy management systems and methods
US8855813Oct 25, 2011Oct 7, 2014Irobot CorporationAutonomous surface cleaning robot for wet and dry cleaning
US8862271Sep 23, 2013Oct 14, 2014Irobot CorporationProximity sensing on mobile robots
US8874264Nov 18, 2011Oct 28, 2014Irobot CorporationCelestial navigation system for an autonomous robot
US8930023Nov 5, 2010Jan 6, 2015Irobot CorporationLocalization by learning of wave-signal distributions
US8954192Jun 5, 2007Feb 10, 2015Irobot CorporationNavigating autonomous coverage robots
US8966707Jul 15, 2010Mar 3, 2015Irobot CorporationAutonomous surface cleaning robot for dry cleaning
US8972052Nov 3, 2009Mar 3, 2015Irobot CorporationCelestial navigation system for an autonomous vehicle
US8978196Dec 20, 2012Mar 17, 2015Irobot CorporationCoverage robot mobility
US8985127Oct 2, 2013Mar 24, 2015Irobot CorporationAutonomous surface cleaning robot for wet cleaning
US9008835Jun 24, 2005Apr 14, 2015Irobot CorporationRemote control scheduler and method for autonomous robotic device
US9038233Dec 14, 2012May 26, 2015Irobot CorporationAutonomous floor-cleaning robot
US9104204May 14, 2013Aug 11, 2015Irobot CorporationMethod and system for multi-mode coverage for an autonomous robot
US20040134023 *Dec 10, 2003Jul 15, 2004Caruso Steven JeromeVersatile tools
US20050229340 *Feb 4, 2005Oct 20, 2005Sawalski Michael MSurface treating device with cartridge-based cleaning system
Classifications
U.S. Classification15/23, 15/344, 15/43, 15/383, 15/39.5
International ClassificationA47L5/26, A46B13/02
Cooperative ClassificationA47L5/26, A46B13/02
European ClassificationA47L5/26, A46B13/02
Legal Events
DateCodeEventDescription
Oct 30, 1987FPAYFee payment
Year of fee payment: 4
Dec 3, 1991REMIMaintenance fee reminder mailed
May 3, 1992LAPSLapse for failure to pay maintenance fees
Jul 7, 1992FPExpired due to failure to pay maintenance fee
Effective date: 19920503